The plug-in chime is activated when a visitor presses the smart doorbell. The plug-in chime is a practical tool that pairs with a smart doorbell, and together they provide home security for you

Features: 433MHz frequency, compatible with wireless video doorbell. Plug-in chime, easy to use, for indoor use only. Adjustable volume, low to silent, up to 110dB. Various melodies for selection, meeting different needs. One chime can be paired with multiple doorbells, one doorbell can be paired with multiple chimes. Note: Size and color may be slightly different due to manual measurement and different lighting conditions or other reasons, please refer to the actual product. Thank you for your understanding. Specifications: Color: Black/ White (Optional) Material: Plastic Plug: UK Voltage: AC 90~250V Frequency: 433MHz Power Consumption: 10mW Volume: adjustable, up to 110dB Music Selection: Support Chime Size (plug not included): 73 * 73 * 32mm / 2.9 * 2.9 * 1.3in Package Size: 8 * 8 * 5.5cm / 3.1 * 3.1 * 2.2in Package Weight: 75g / 2.6oz Package List: 1 * Plug-in Chime 1 * User Manual (English)